Enzyme Bleach Wash:
In the previous article, we have read the flow chart of the enzyme wash and the flow chart of bleach wash. In this article, I will give a process flow chart of enzyme bleach wash. Here, I will use 60 pcs garments and 400-liter water
Process Flow Chart of Enzyme Bleach Wash with Tinting
Step 01: Desizing
Water is added (400 Lt)
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Garments are added
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Machine started running
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500 gm Soda Ash added
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500 gm Caustic Soda added
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200 gm Bio. D added
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Steam to raise temp 60°C
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Process time 25 minutes
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Drop liquor
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Wash down twice
Step 02: Enzyme Wash
Water is added (400 Lt)
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Machine started running
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200 ml liquid, 400 gm powder type Enzyme added
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150 ml Acetic Acid Added
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200 gm Anti back added
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10 Kg Peumic Stone added
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Steam to raise temp 50°C
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Process time 60 minutes
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Drop liquor
Step 03: Bleaching
Water is added (400 Lt)
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Machine started running
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4 Kg KCI (35% Cl2) added
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500 gm Soda Ash added
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Steam to raise temp 60°C
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Process time 10 minutes
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Drop liquor
Step 04: Neutral Wash
Water is added (400 Lt)
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Machine started running
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500 gm Hypo sulfide added
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Steam to raise temp 45°C
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Process time 10 minutes
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Drop liquor
Step 05: Tinting
Water is added (400 Lt)
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Machine started running
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0.02% Direct Brown GTL & 0.01% Direct Black V-200 added
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4 Kg Salt added
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Steam to raise temp 70°C
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Process time 20 minutes
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Check Shade
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Drop the liquor
Step 06: Drying
Garments are then taken out
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Hydro extracted
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Send to the dryer for drying of garments.
Enzymatic Bio-Bleaching:
A company named ‘Huntsman’ developed a stabilizer. That maximizes the wetting and detergency of this bleaching process. A one-bath caustic neutralizer and peroxide remover to shorten the bleaching cycle. It also reduces energy and water. Huntsman developed surfactants that are eco-friendly systems. It’s both Oeko-Tex and GOTS approved. After fabric or yarn bleaching, a step called Bleach Clean-up. It residues of hydrogen peroxide are left in the bath and need to be completely removed prior to the dyeing process.
Author of this Article: Mayedul Islam Merchandiser at Fashion Xpress Buying House. Badda, Dhaka, Bangladesh. Email: [email protected]